This is the hen house my son and I built. We used a kit with metal brackets so there were no angles to cut. I've been called a lot of things in my life but carpenter is not one of them. It has 5 nests and a roosting ladder, 7ft. by 8ft.
It is nice house I think you can make better
Change the chicken wire to a stronger weldmesh wire, chicken wire stops chickens getting out but it doesn't stop any predator getting in.
You need a stronger door locking device
You don't need nesting boxes inside the coop, put something like this outside, saw a hole in it and put it outside with the hole opening inside the coop, be sure it is locked predator proof.
Put roosting bars across the coop.
Consider electric fence and if you have aerial predators consider a tough bird net over the run
Happy chickening